[pianotech] West System Epoxy as filler/wood rebuilder

[William Monroe]

Just sanding to leave a "ghost" of the string grove, then re-notching mainly
for the termination, but also to clean the entire notch.  Looks nearly new
when done.

WRM


On Thu, Apr 30, 2009 at 7:16 AM, Al Guecia/AlliedPianoCraft <
AlliedPianoCraft at hotmail.com> wrote:

>  William, when you talk about resurfacing, are you just sanding or do you
> apply epoxy to the bridge top.
>
> Al
>
>
>
>  *From:* William Monroe <bill at a440piano.net>
> *Sent:* Wednesday, April 29, 2009 7:58 PM
> *To:* pianotech at ptg.org
> *Subject:* Re: [pianotech] West System Epoxy as filler/wood rebuilder
>
> Hi John,
>
> Yep, done it may times - just did it today.  After resurfacing and notching
> the bridge, I use the same size pins and I don't redrill.  If the holes are
> grossly enlarged, recap.  Mix West System without fillers, and transfer to a
> large hypo-oiler.  I then use a strong squeeze clamp to encourage the epoxy
> to leave the oiler faster than you can squeeze it (it's pretty viscous).
>
> I insert the oiler to the bottom of the hole, and fill the holes.
> Sometimes going back over them as the epoxy finds all the cracks and seeps
> into the entire bridge.  I drive the pins in to the desired depth, and use
> old panty hose (knee-high's work nice) to shoe shine the top of the bridge
> and get the epoxy to coat the bridge top and notches evenly.  I'll also use
> a nice, square-edge piece of hammer felt to swab/swipe the notches and
> spread the epoxy evenly there.
>
> If I'm doing it by myself, I'd do it in three passes - each half of the
> long bridge and then the bass bridge.  That should give you enough time to
> get things wrapped up before the epoxy thickens too much.  If in doubt, do
> four batches.  When all's dry shoot it with a coat of lacquer.
>
> William R. Monroe
>
>
>
> On Wed, Apr 29, 2009 at 9:11 AM, John Dorr <a440 at bresnan.net> wrote:
>
>> Hi,
>>
>> I've got a bridge I'm working on with enlarged, though not really cracked,
>> holes.  Rather than put in ever-larger pins, I thought I might try the West
>> System Epoxy to fill the holes and then re-drill them.  Has anybody tried
>> this?  Have recommendations for/against?  And if for, what filler would you
>> prefer to use?
>>
>> Thanks in advance,
>>
>> John Dorr,
>> Helena, MT
>>
>>
>>
>>
>>
>
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